Download Linux Kernel Internals by Michael Beck, Harald Bohme, Mirko Dziadzka, Ulrich Kunitz, PDF

By Michael Beck, Harald Bohme, Mirko Dziadzka, Ulrich Kunitz, Robert Magnus, Dirk Verworner

I discovered the reasons during this booklet to be very transparent, giving sufficient aspect for an outstanding head commence into Linux internals. The booklet in short explains the OS techniques, akin to semaphores, digital reminiscence, etc., via an summary of ways each one is applied in Linux, and code snippets.

Most of the code snippets are simplified for clarity, which i discovered important as the hacks could be distracting (scary, too) for a newbie. precise and updated info can top be acquired from resource code itself.

The publication assumes a few familiarity with Unix techniques, because it mentions such buzzwords as POSIX, BSD, and SVR4 within the context of the discussions, yet you possibly can accurately forget about them, and simply pay attention to the Linux part.

The publication in short covers including new approach calls, compilinag and debugging the kernel, or even exhibits the best way to write an easy equipment motive force - those are not easy to discover in a single place.

Overall, i discovered this booklet to be very worthy for my self-paced learn (the top so far), and that i simply want they'd a more moderen variation.

Show description

Read or Download Linux Kernel Internals PDF

Best linux books

The Bozo Loop

Make a journey into the realm of platforms management, programming, networking, tech help, and dwelling in Silicon Valley. The Bozo Loop is a suite of news from 2011 which divulge the internal workings of items a few humans might fairly maintain quiet.

Inside, you will find out what it's wish to be a girl operating at one of many tech sector's darling businesses, and whilst advertising doesn't fit truth. See the side-effects of bean-counters arriving and commencing to squeeze the existence out of a formerly-vibrant engineering culture.

You're alongside for the experience as undesirable consumer interfaces are referred to as out and ripped aside piece via piece. you may also see what occurs whilst technicians mutiny and the real that means of "Project Darkness" and "Umbrellagate", together with pictures!

There also are stories of troubleshooting loopy difficulties for hosting clients and rigging actually evil hacks to maintain badly-designed structures working. eventually, you could find out about more moderen initiatives just like the large Trunking Scanner, and what it takes to construct a approach that no-one has ever attempted before.

Hosers, ramrods and bozos alike, watch out!

LPIC-1: Linux Professional Institute Certification Study Guide: Exams 101 and 102 (3rd Edition)

Up to date for the newest LPIC-1 tests a hundred and one and 102

The LPIC-1 certification measures your knowing of the Linux Kernel. because the Linux server industry keeps to develop, so does the call for for qualified Linux directors. arrange for the newest types of the LPIC-1 checks one hundred and one and 102 with the hot variation of this unique examine advisor. This sensible publication covers key Linux management themes and all examination ambitions and comprises real-world examples and evaluation inquiries to assist you perform your abilities. additionally, you'll achieve entry to a whole set of on-line learn instruments, together with bonus perform checks, digital flashcards, and more.

• Prepares applicants to take the Linux expert Institute checks a hundred and one and 102 and attain their LPIC-1 certification
• Covers all examination targets and lines extended assurance on key subject matters within the exam
• comprises real-world eventualities, and not easy overview questions
• themes contain procedure structure, install, GNU and Unix instructions, Linux filesystems, crucial procedure prone, networking basics, safety, and more
Approach the LPIC-1 certification assessments with self belief, with LPIC-1: Linux expert Institute Certification examine consultant, 3rd version.

Professional Linux Programming

As Linux raises its presence through the global as a goal platform for pro software improvement, its development as a strong, versatile method providing many unfastened improvement instruments assures its position sooner or later. by way of providing you with quick access to this entire variety of instruments, aiding new and nascent applied sciences, at very little expense, constructing with Linux enables you to practice the answer that is good for you.

The Debian System: Concepts and Techniques

The Debian GNU/Linux working approach techniques Linux method management in a different way than different well known Linux distributions, favoring text-based configuration mechanisms over graphical person interfaces (GUIs). Debian might sound simplistic or even a bit of superseded, however it is admittedly very strong, scalable, and safe.

Additional resources for Linux Kernel Internals

Example text

2. Here, we are more interested in the principles governing the execution of an interrupt. h. There are two types of interrupt in LINUX: fast and slow. We could even say there are three, with the third type represented by system calls, which are also triggered via interrupts. However, this chapter will only deal with hardware interrupts. Slow interrupts Slow interrupts are the usual kind. Other interrupts are legal while they are being dealt with. After a slow interrupt has been processed, additional activities requiring regular attention are carried out by the system - for example, the scheduler is called as and when required.

The variable f_count is a simple reference counter. A number of file descriptors may refer to the same file structure. As these are inherited through the system call fork, the same file Chapter 3 Introduction to the kernel structure may also be referenced from different processes. When a file is opened, f_count is initialized to 1. Every time the file descriptor is copied (by the system calls dup, dup2 or fork) the reference counter is incremented by 1, and every time a file is closed (using the Linux kernel internails - 42 - system calls close, _exit or exec) it is decreased by 1.

The count variable is reserved for future expansions. A process opening a file with open() or creat() is given a file descriptor by the kernel to use in referencing the file in future. File descriptors are small 4 The abbreviation pwd most probably derives from the UNIX command pwd - Print Working Directory - which outputs the name of the current directory. Linux kernel internails - 36 - integers. The file descriptors are assigned to the files under LINUX via the fd[] field in the substructure: struct files_struct files[1]; This has four components: int count; fd_set close_on_exec; fd_set open_fds; struct file * fd[NR_OPEN]; File descriptors are used as an index in the fd[] field.

Download PDF sample

Rated 4.09 of 5 – based on 10 votes